{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-64065",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-64065"
  ],
  "published": "2026-07-19T15:41:06Z",
  "summary": "netfs: fix VM_BUG_ON_FOLIO() issue in netfs_write_begin() call",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: fix VM_BUG_ON_FOLIO() issue in netfs_write_begin() call\n\nThe multiple runs of generic/013 test-case is capable\nto reproduce a kernel BUG at mm/filemap.c:1504 with\nprobability of 30%.\n\nwhile true; do\n  sudo ./check generic/013\ndone\n\n[ 9849.452376] page: refcount:3 mapcount:0 mapping:00000000e58ff252 index:0x10781 pfn:0x1c322\n[ 9849.452412] memcg:ffff8881a1915800\n[ 9849.452417] aops:ceph_aops ino:1000058db9e dentry name(?):\"f9XXXXXX\"\n[ 9849.452432] flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff)\n[ 9849.452441] raw: 0017ffffc0000000 0000000000000000 dead000000000122 ffff88816110d248\n[ 9849.452445] raw: 0000000000010781 0000000000000000 00000003ffffffff ffff8881a1915800\n[ 9849.452447] page dumped because: VM_BUG_ON_FOLIO(!folio_test_locked(folio))\n[ 9849.452474] ------------[ cut here ]------------\n[ 9849.452476] kernel BUG at mm/filemap.c:1504!\n[ 9849.478635] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\n[ 9849.481772] CPU: 2 UID: 0 PID: 84223 Comm: fsstress Not tainted 7.0.0-rc1+ #18 PREEMPT(full)\n[ 9849.482881] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-9.fc43 06/1\n0/2025\n[ 9849.484539] RIP: 0010:folio_unlock+0x85/0xa0\n[ 9849.485076] Code: 89 df 31 f6 e8 1c f3 ff ff 48 8b 5d f8 c9 31 c0 31 d2 31 f6 31 ff c3 cc\ncc cc cc 48 c7 c6 80 6c d9 a7 48 89 df e8 4b b3 10 00 <0f> 0b 48 89 df e8 21 e6 2c 00 eb 9d 0f 1f 40 00 66 66 2e 0f 1f 84\n[ 9849.493818] RSP: 0018:ffff8881bb8076b0 EFLAGS: 00010246\n[ 9849.495740] RAX: 0000000000000000 RBX: ffffea00070c8980 RCX: 0000000000000000\n[ 9849.498678] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\n[ 9849.500559] RBP: ffff8881bb8076b8 R08: 0000000000000000 R09: 0000000000000000\n[ 9849.501097] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000010782000\n[ 9849.502108] R13: ffff8881935de738 R14: ffff88816110d010 R15: 0000000000001000\n[ 9849.502516] FS:  00007e36cbe94740(0000) GS:ffff88824a899000(0000) knlGS:0000000000000000\n[ 9849.502996] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 9849.503810] CR2: 000000c0002b0000 CR3: 000000011bbf6004 CR4: 0000000000772ef0\n[ 9849.504459] PKRU: 55555554\n[ 9849.504626] Call Trace:\n[ 9849.505242]  <TASK>\n[ 9849.505379]  netfs_write_begin+0x7c8/0x10a0\n[ 9849.505877]  ? __kasan_check_read+0x11/0x20\n[ 9849.506384]  ? __pfx_netfs_write_begin+0x10/0x10\n[ 9849.507178]  ceph_write_begin+0x8c/0x1c0\n[ 9849.507934]  generic_perform_write+0x391/0x8f0\n[ 9849.508503]  ? __pfx_generic_perform_write+0x10/0x10\n[ 9849.509062]  ? file_update_time_flags+0x19a/0x4b0\n[ 9849.509581]  ? ceph_get_caps+0x63/0xf0\n[ 9849.510259]  ? ceph_get_caps+0x63/0xf0\n[ 9849.510530]  ceph_write_iter+0xe79/0x1ae0\n[ 9849.511282]  ? __pfx_ceph_write_iter+0x10/0x10\n[ 9849.511839]  ? lock_acquire+0x1ad/0x310\n[ 9849.512334]  ? ksys_write+0xf9/0x230\n[ 9849.512582]  ? lock_is_held_type+0xaa/0x140\n[ 9849.513128]  vfs_write+0x512/0x1110\n[ 9849.513634]  ? __fget_files+0x33/0x350\n[ 9849.513893]  ? __pfx_vfs_write+0x10/0x10\n[ 9849.514143]  ? mutex_lock_nested+0x1b/0x30\n[ 9849.514394]  ksys_write+0xf9/0x230\n[ 9849.514621]  ? __pfx_ksys_write+0x10/0x10\n[ 9849.514887]  ? do_syscall_64+0x25e/0x1520\n[ 9849.515122]  ? __kasan_check_read+0x11/0x20\n[ 9849.515366]  ? trace_hardirqs_on_prepare+0x178/0x1c0\n[ 9849.515655]  __x64_sys_write+0x72/0xd0\n[ 9849.515885]  ? trace_hardirqs_on+0x24/0x1c0\n[ 9849.516130]  x64_sys_call+0x22f/0x2390\n[ 9849.516341]  do_syscall_64+0x12b/0x1520\n[ 9849.516545]  ? do_syscall_64+0x27c/0x1520\n[ 9849.516783]  ? do_syscall_64+0x27c/0x1520\n[ 9849.517003]  ? lock_release+0x318/0x480\n[ 9849.517220]  ? __x64_sys_io_getevents+0x143/0x2d0\n[ 9849.517479]  ? percpu_ref_put_many.constprop.0+0x8f/0x210\n[ 9849.517779]  ? entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[ 9849.518073]  ? do_syscall_64+0x25e/0x1520\n[ 9849.518291]  ? __kasan_check_read+0x11/0x20\n[ 9849.518519]  ? trace_hardirqs_on_prepare+0x178/0x1c0\n[ 9849.518799]  ? do_syscall_64+0x27c/0x1520\n[ 9\n---truncated---",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.12.20-1+rpt1~bpo12+1",
        "1:6.12.25-1+rpt1",
        "1:6.12.34-1+rpt1~bookworm",
        "1:6.12.47-1+rpt1~bookworm",
        "1:6.12.62-1+rpt1~bookworm",
        "1:6.12.75-1+rpt1~bookworm",
        "1:6.12.87-1+rpt1~bookworm"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.12.20+rpt-rpi-2712",
            "binary_version": "1:6.12.20-1+rpt1~bpo12+1"
          },
          {
            "binary_name": "linux-image-6.12.20+rpt-rpi-v6",
            "binary_version": "1:6.12.20-1+rpt1~bpo12+1"
          },
          {
            "binary_name": "linux-image-6.12.20+rpt-rpi-v7",
            "binary_version": "1:6.12.20-1+rpt1~bpo12+1"
          },
          {
            "binary_name": "linux-image-6.12.20+rpt-rpi-v7l",
            "binary_version": "1:6.12.20-1+rpt1~bpo12+1"
          },
          {
            "binary_name": "linux-image-6.12.20+rpt-rpi-v8",
            "binary_version": "1:6.12.20-1+rpt1~bpo12+1"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-2712",
            "binary_version": "1:6.12.25-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v6",
            "binary_version": "1:6.12.25-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v7",
            "binary_version": "1:6.12.25-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v7l",
            "binary_version": "1:6.12.25-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v8",
            "binary_version": "1:6.12.25-1+rpt1"
          },
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            "binary_version": "1:6.12.34-1+rpt1~bookworm"
          },
          {
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            "binary_version": "1:6.12.34-1+rpt1~bookworm"
          },
          {
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            "binary_version": "1:6.12.34-1+rpt1~bookworm"
          },
          {
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            "binary_version": "1:6.12.34-1+rpt1~bookworm"
          },
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            "binary_name": "linux-image-6.12.34+rpt-rpi-v8",
            "binary_version": "1:6.12.34-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.34+rpt-rpi-v8-rt",
            "binary_version": "1:6.12.34-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-2712",
            "binary_version": "1:6.12.47-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-v6",
            "binary_version": "1:6.12.47-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-v7",
            "binary_version": "1:6.12.47-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-v7l",
            "binary_version": "1:6.12.47-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-v8",
            "binary_version": "1:6.12.47-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-v8-rt",
            "binary_version": "1:6.12.47-1+rpt1~bookworm"
          },
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            "binary_version": "1:6.12.62-1+rpt1~bookworm"
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            "binary_version": "1:6.12.62-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.62+rpt-rpi-v7",
            "binary_version": "1:6.12.62-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.62+rpt-rpi-v7l",
            "binary_version": "1:6.12.62-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.62+rpt-rpi-v8",
            "binary_version": "1:6.12.62-1+rpt1~bookworm"
          },
          {
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            "binary_version": "1:6.12.62-1+rpt1~bookworm"
          },
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            "binary_name": "linux-image-6.12.75+rpt-rpi-2712",
            "binary_version": "1:6.12.75-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.75+rpt-rpi-v6",
            "binary_version": "1:6.12.75-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.75+rpt-rpi-v7",
            "binary_version": "1:6.12.75-1+rpt1~bookworm"
          },
          {
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            "binary_version": "1:6.12.75-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.75+rpt-rpi-v8",
            "binary_version": "1:6.12.75-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.75+rpt-rpi-v8-rt",
            "binary_version": "1:6.12.75-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.87+rpt-rpi-2712",
            "binary_version": "1:6.12.87-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.87+rpt-rpi-v6",
            "binary_version": "1:6.12.87-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.87+rpt-rpi-v7",
            "binary_version": "1:6.12.87-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.87+rpt-rpi-v7l",
            "binary_version": "1:6.12.87-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.87+rpt-rpi-v8",
            "binary_version": "1:6.12.87-1+rpt1~bookworm"
          },
          {
            "binary_name": "linux-image-6.12.87+rpt-rpi-v8-rt",
            "binary_version": "1:6.12.87-1+rpt1~bookworm"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.12.20-1+rpt1~bpo12+1": {
            "linux_commit": "cd231d4775b14f228606c09f219b48308f6ab3aa",
            "upstream_version": "6.12.20",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.12.92"
          },
          "1:6.12.25-1+rpt1": {
            "linux_commit": "3dd2c2c507c271d411fab2e82a2b3b7e0b6d3f16",
            "upstream_version": "6.12.25",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.12.92"
          },
          "1:6.12.34-1+rpt1~bookworm": {
            "linux_commit": "8f77e03530f65209a377d25023e912b288e039cd",
            "upstream_version": "6.12.34",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.12.92"
          },
          "1:6.12.47-1+rpt1~bookworm": {
            "linux_commit": "359f37f0faefb712add32a39f98751aea67d5c1f",
            "upstream_version": "6.12.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.12.92"
          },
          "1:6.12.62-1+rpt1~bookworm": {
            "linux_commit": "a1073743767f9e7fdc7017ababd2a07ea0c97c1c",
            "upstream_version": "6.12.62",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.12.92"
          },
          "1:6.12.75-1+rpt1~bookworm": {
            "linux_commit": "89050b1059997d38d55462b323b099a6436dc10d",
            "upstream_version": "6.12.75",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.12.92"
          },
          "1:6.12.87-1+rpt1~bookworm": {
            "linux_commit": "ae4d75fb36deba0fe1a986d9bfae65755e082dd0",
            "upstream_version": "6.12.87",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.12.92"
          }
        }
      }
    },
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:13",
        "name": "linux"
      },
      "versions": [
        "1:6.12.19-1+rpt1~bpo12+1",
        "1:6.12.19-1+rpt1",
        "1:6.12.20-1+rpt1",
        "1:6.12.25-1+rpt1+trixie",
        "1:6.12.34-1+rpt1",
        "1:6.12.47-1+rpt1",
        "1:6.12.62-1+rpt1",
        "1:6.12.75-1+rpt1",
        "1:6.18.29-1+rpt1",
        "1:6.18.33-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.12.19+rpt-rpi-2712",
            "binary_version": "1:6.12.19-1+rpt1~bpo12+1"
          },
          {
            "binary_name": "linux-image-6.12.19+rpt-rpi-v6",
            "binary_version": "1:6.12.19-1+rpt1~bpo12+1"
          },
          {
            "binary_name": "linux-image-6.12.19+rpt-rpi-v7",
            "binary_version": "1:6.12.19-1+rpt1~bpo12+1"
          },
          {
            "binary_name": "linux-image-6.12.19+rpt-rpi-v7l",
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          {
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          },
          {
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            "binary_version": "1:6.12.19-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.19+rpt-rpi-v6",
            "binary_version": "1:6.12.19-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.19+rpt-rpi-v7",
            "binary_version": "1:6.12.19-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.19+rpt-rpi-v7l",
            "binary_version": "1:6.12.19-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.19+rpt-rpi-v8",
            "binary_version": "1:6.12.19-1+rpt1"
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            "binary_version": "1:6.12.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.20+rpt-rpi-v6",
            "binary_version": "1:6.12.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.20+rpt-rpi-v7",
            "binary_version": "1:6.12.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.20+rpt-rpi-v7l",
            "binary_version": "1:6.12.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.20+rpt-rpi-v8",
            "binary_version": "1:6.12.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-2712",
            "binary_version": "1:6.12.25-1+rpt1+trixie"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v6",
            "binary_version": "1:6.12.25-1+rpt1+trixie"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v7",
            "binary_version": "1:6.12.25-1+rpt1+trixie"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v8",
            "binary_version": "1:6.12.25-1+rpt1+trixie"
          },
          {
            "binary_name": "linux-image-6.12.25+rpt-rpi-v8-rt",
            "binary_version": "1:6.12.25-1+rpt1+trixie"
          },
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            "binary_name": "linux-image-6.12.34+rpt-rpi-2712",
            "binary_version": "1:6.12.34-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.34+rpt-rpi-v6",
            "binary_version": "1:6.12.34-1+rpt1"
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            "binary_version": "1:6.12.34-1+rpt1"
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          {
            "binary_name": "linux-image-6.12.34+rpt-rpi-v8",
            "binary_version": "1:6.12.34-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.34+rpt-rpi-v8-rt",
            "binary_version": "1:6.12.34-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-2712",
            "binary_version": "1:6.12.47-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-v6",
            "binary_version": "1:6.12.47-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-v7",
            "binary_version": "1:6.12.47-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-v8",
            "binary_version": "1:6.12.47-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.47+rpt-rpi-v8-rt",
            "binary_version": "1:6.12.47-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.62+rpt-rpi-2712",
            "binary_version": "1:6.12.62-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.62+rpt-rpi-v6",
            "binary_version": "1:6.12.62-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.62+rpt-rpi-v7",
            "binary_version": "1:6.12.62-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.62+rpt-rpi-v8",
            "binary_version": "1:6.12.62-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.62+rpt-rpi-v8-rt",
            "binary_version": "1:6.12.62-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.75+rpt-rpi-2712",
            "binary_version": "1:6.12.75-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.75+rpt-rpi-v6",
            "binary_version": "1:6.12.75-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.12.75+rpt-rpi-v7",
            "binary_version": "1:6.12.75-1+rpt1"
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